Re: XT DOS in PROM (EPROM)?

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Article #1546

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#1546

From: Leonard Erickson
Date: Fri, 04 Sep 1992 02:51

24 lines
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etxvsi@james10.jamesdom (Vitomir Ilic) writes:

>Has anyone tried to put PC-XT DOS in PROM(s) or EPROM(s)?
>How to tell the PC to execute programs from the PROM(s),
>rather than to load them from hard disk to RAM and then
>execute? 	

The machine I'm entering this on has DOS 3.3 in ROM. If I
set the config properly, it'll boot from the ROM even though 
there's an HD (or even if there's a floppy in the A drive!)

It's Phoenix BIOS.

I believe that support for what you want has to be in the BIOS 
or it won't work. Though I could easily be wrong. Don't forget
that at boot time all "expansion ROMs" are checked to see if
they have code that has to be installed then. Such code can override
the BIOS.

-- 
Leonard Erickson		      leonard@qiclab.scn.rain.com
CIS: [70465,203]			 70465.203@compuserve.com
FIDO:   1:105/51	 Leonard.Erickson@f51.n105.z1.fidonet.org
(The CIS & Fido addresses are preferred)

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Message-ID: <1992Sep4.025121.24667@qiclab.scn.rain.com>

Path: arc1-ca.pugleaf.net!sparky!uunet!psgrain!qiclab!leonard

References: <1992Sep2.143411.12756@ericsson.se>

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Newsgroups: comp.sys.ibm.pc.misc
Path: arc1-ca.pugleaf.net!sparky!uunet!psgrain!qiclab!leonard
From: leonard@qiclab.scn.rain.com (Leonard Erickson)
Subject: Re: XT DOS in PROM (EPROM)? 
Message-ID: <1992Sep4.025121.24667@qiclab.scn.rain.com>
Reply-To: 70465.203@compuserve.com
Organization: SCN Research/Qic Laboratories of Tigard, Oregon.
References: <1992Sep2.143411.12756@ericsson.se>
Date: Fri, 4 Sep 1992 02:51:21 GMT
Lines: 24

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